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-rw-r--r--Documentation/scsi/sym53c8xx_2.txt21
1 files changed, 5 insertions, 16 deletions
diff --git a/Documentation/scsi/sym53c8xx_2.txt b/Documentation/scsi/sym53c8xx_2.txt
index 3d9f06bb3d00..49ea5c58c6bc 100644
--- a/Documentation/scsi/sym53c8xx_2.txt
+++ b/Documentation/scsi/sym53c8xx_2.txt
@@ -449,25 +449,14 @@ options as above.
449 cmd_per_lun=#tags (#tags > 1) tagged command queuing enabled 449 cmd_per_lun=#tags (#tags > 1) tagged command queuing enabled
450 #tags will be truncated to the max queued commands configuration parameter. 450 #tags will be truncated to the max queued commands configuration parameter.
451 451
45210.2.2 Detailed control of tagged commands 45210.2.2 Burst max
453 This option allows you to specify a command queue depth for each device
454 that supports tagged command queueing.
455 Example:
456 tag_ctrl=10/t2t3q16-t5q24/t1u2q32
457 will set devices queue depth as follow:
458 - controller #0 target #2 and target #3 -> 16 commands,
459 - controller #0 target #5 -> 24 commands,
460 - controller #1 target #1 logical unit #2 -> 32 commands,
461 - all other logical units (all targets, all controllers) -> 10 commands.
462
46310.2.3 Burst max
464 burst=0 burst disabled 453 burst=0 burst disabled
465 burst=255 get burst length from initial IO register settings. 454 burst=255 get burst length from initial IO register settings.
466 burst=#x burst enabled (1<<#x burst transfers max) 455 burst=#x burst enabled (1<<#x burst transfers max)
467 #x is an integer value which is log base 2 of the burst transfers max. 456 #x is an integer value which is log base 2 of the burst transfers max.
468 By default the driver uses the maximum value supported by the chip. 457 By default the driver uses the maximum value supported by the chip.
469 458
47010.2.4 LED support 45910.2.3 LED support
471 led=1 enable LED support 460 led=1 enable LED support
472 led=0 disable LED support 461 led=0 disable LED support
473 Do not enable LED support if your scsi board does not use SDMS BIOS. 462 Do not enable LED support if your scsi board does not use SDMS BIOS.
@@ -560,9 +549,9 @@ Previously, the sym2 driver accepted arguments of the form
560 sym53c8xx=tags:4,sync:10,debug:0x200 549 sym53c8xx=tags:4,sync:10,debug:0x200
561 550
562As a result of the new module parameters, this is no longer available. 551As a result of the new module parameters, this is no longer available.
563Most of the options have remained the same, but tags has split into 552Most of the options have remained the same, but tags has become
564cmd_per_lun and tag_ctrl for its two different purposes. The sample above 553cmd_per_lun to reflect its different purposes. The sample above would
565would be specified as: 554be specified as:
566 modprobe sym53c8xx cmd_per_lun=4 sync=10 debug=0x200 555 modprobe sym53c8xx cmd_per_lun=4 sync=10 debug=0x200
567 556
568or on the kernel boot line as: 557or on the kernel boot line as: